Key learning points

1. A chemical test can identify the differences between alkanes and alkenes.
2. Data from calorimetry and viscosity experiments can be used to predict the chain length of alkanes, alkenes & alcohols.
3. As chain length increases, more energy is released during combustion.
4. As chain length increases, the viscosity of alkanes, alkenes and alcohols increases.

Keywords

• Homologous series - A homologous series of organic compounds have the same general formula, and show similar chemical properties and physical property trends.

• Functional group - The functional group is the atom or group of atoms responsible for the way a compound reacts.

• Calorimetry - Calorimetry is an experiment that can be used to measure the energy released from a fuel.

• Viscosity - Viscosity is how easily a liquid flows. The higher the viscosity, the less easily a liquid flows.

Common misconception